WO2000057723A1

WO2000057723A1 - Method for storing or transporting erythritol solution

Info

Publication number: WO2000057723A1
Application number: PCT/JP2000/002016
Authority: WO
Inventors: Chikanori Takahashi; Takashi Akasaka; Takanori Maehara; Masatsugu Nozaki
Original assignee: Nikken Chemicals Co., Ltd.
Priority date: 1999-03-30
Filing date: 2000-03-30
Publication date: 2000-10-05
Also published as: EP1166646B1; KR100552332B1; KR20020003219A; EP1166646A1; US6489469B1; EP1166646A4

Abstract

A method for storing or transporting an erythritol solution wherein erythritol is maintained as a solution at a concentration and a temperature each falling within a specific range. By setting the above conditions, the erythritol solution can be stored over a long time or transported to the destination as a solution.

Description

Description Storage and transport method of erythritol solution Technical field

The present invention relates to a method for storing and transporting an erythritol solution, and more particularly to a method for storing or transporting erythritol, which is a food, as a solution instead of crystalline powder while preventing bacterial contamination and crystal precipitation. Background art

Erythritol is a sugar alcohol with 4 carbon atoms, and is widely used in the food industry as a sweetener with a sweetness of about 70% of sugar, low energy and non-cariogenic properties.

Conventionally, erythritol is stored (preserved) and transported (distributed) in a state in which dried crystal powders are usually packed in paper bags in units of 20 kg.

In recent years, erythritol has been used by beverage manufacturers and the like, and the demand for erythritol has increased significantly. After purchasing erythritol, beverage manufacturers, who are mass consumers, have opened a large number of 20 kg bags one after another, put them into a melting tank, and used them after dissolving them. However, as the amount of consumption increases, the labor and time required to open the bag becomes excessive, and erythritol absorbs a significant amount of heat when it dissolves, so it is difficult to dissolve it. It is necessary to stir and dissolve while heating with a considerable amount of melting energy (specifically, steam), and a large amount of empty bags become useless. And environmentally undesirable problems have arisen. The present inventors have conducted various studies on erythritol products that do not have the above-mentioned drawbacks, and as a result, by keeping erythritol in a solution as it is under certain conditions, the above-mentioned storage, transportation, etc. The inventors have found that the various problems described above can be solved, and have completed the present invention.

That is, the present inventors made erythritol into a solution at the shipping stage, and examined the conditions under which germs did not grow and the product did not deteriorate due to heating and coloring, specifically, storage temperature and erythritol concentration. We examined ways to store and transport liquids and supply them to consumers.

Specifically, for the erythritol solution, study the storage temperature and concentration conditions under which various bacteria do not grow, study the storage temperature and concentration conditions under which erythritol crystals do not precipitate, and study the storage temperature conditions under which the solution does not color. We studied conditions that satisfy these three conditions.

As a result, they have found conditions that satisfy this, and have invented a method for storing and transporting erythritol in solution. Disclosure of the invention

According to the present invention, the erythritol solution is maintained at a solid concentration of 30% or more and a temperature of 50 ° C or more so that erythritol crystals do not precipitate, preferably, the solid concentration is 50 to 70%. A method for storing and transporting an erythritol solution characterized in that the temperature is maintained at 50 to 75 ° C, more preferably at a solid concentration of 50 to 58%, and the temperature is maintained at 55 to 65 ° C. . BEST MODE FOR CARRYING OUT THE INVENTION

Erythritol is produced by fermenting glucose as a raw material using a microorganism capable of producing erythritol. Erythritol in the fermentation broth is then purified, specifically, cell separation, chromatographic separation, : Manufactured as a crystalline powder product through a process of resin replacement, activated carbon treatment, crystallization, crystal separation, and drying.

The erythritol solution according to the present invention is characterized in that, in the above step, the activated carbon treatment liquid before crystallization is subjected to a predetermined concentration, that is, 30% or more, preferably 50 to 70%, more preferably 50 to 58%. %.

Further, the erythritol solution according to the present invention can also be produced by adding water to crystals after crystal separation and dissolving the crystals to a predetermined concentration.

In the present invention, the erythritol solution prepared at a predetermined concentration does not crystallize out, can inhibit the growth of various bacteria, and has a temperature of about 50 ° C. or higher, which is a temperature at which product deterioration due to coloring does not occur. It is kept at 50-75, preferably 55-65 ° C.

The present invention is a method for storing and transporting an erythritol solution by maintaining the erythritol solution at a concentration and a temperature within a certain range. By setting such conditions, the erythritol solution Can be stored for a long time or transported to the destination as a solution.

The erythritol solution is injected into a tank, for example, a tank lorry, a freight car, etc., and, if necessary, kept warm or transported to a destination to prevent crystal precipitation.

The method for storing and transporting the erythritol solution of the present invention is described below, but the present invention is not limited to these examples.

Example 1 (resistance to various germs)

An erythritol solution was prepared so as to have a concentration of 30 to 60%. IFO 3134, Escherichia coli IFO 3972, Candida albicans IFO 1549 as yeast, Saccharomyces cerevisiae ATCC 9763 as yeast, Aspergillus nigar IFO 6342 as germ Aspergillus f lavas) IFO 6343, Penicillium funiculosum

(Penicillium funiculosum) IFO 6345 was inoculated so as to have a bacterial count (concentration) of 100 000 cells / mL or more.

After inoculation, each solution was stored at 30, 37, 45, 50, and 60 ° C for 56 days, and the number of viable bacteria was measured daily. The number of viable bacteria was measured by a method in which 0.1 mL of an appropriately diluted sample was uniformly spread on an agar plate medium, cultured, and the number of viable bacteria (the number of colonies) that grew after the culture was counted. The results are shown in Tables 11 to 18.

As is clear from these tables, the growth of all the bacteria was inhibited at a temperature of 50 ° C or higher, and all the bacteria except Aspergillus niger died after 3 days. All Aspergillus nigers also died seven days later.

By adding an erythritol solution with a concentration of 30% (w / w) or more to a container such as a tank lorry and keeping the temperature at 50 ° C or more, growth of normal bacteria is suppressed and crystals are precipitated. It can be seen that they can be stored or transported without.

Table 1 Staphylococcus aureus IFO 13276

Number of survivors in erythritol solution

Table 1 2 Escherichia col i IFO 3972

Number of survivors in erythritol solution

Temperature Viable bacteria count (pcs / mL)

(° C) (¾ / / w) 0 3 3 Big 7 g 14 g 28 56

30 30 10000 11 10000 10000 Ht 7780 110 0

40 10000 JiLh 10400 2820 420 0 0

37 30 10000 JiLh 10000 lil 8270 0 0 0

40 10000 HLt 11100 140 0 0 0

45 30 10000 JiLt 450 0 0 0 0

40 10000 HLt 0 0 0 0 0

50 10000 JiU: 0 0 0 0 0

50 30 10000 Ht 0 0 0 0 0

40 10000 JiLh 0 0 0 0 0

50 10000 JiLh 0 0 0 0 0 Table 3 Baccillus subtilis IFO 3134

Number of survivors in erythritol solution

Table 4 Candida albicans IFO 1549

Number of survivors in erythritol solution

Temperature Viable count (i @ / mL)

(° C) (% / w / w) 0 0 Big 3 BS 7 Big 14 Big 28 g g Day 56

37 30 10000 liLh 10000 10000 loooo m: 10000 HL 10000 JiLh

40 10000 ΰ 10000 H loooom: 10000 Ϊ Ϊ. 10000 liU: 10000 JiU:

45 30 loooo ϋϋ: 190 0 0 0 0

40 10000 lilt 0 0 0 0 0

50 10000 & ± 0 0 0 0 0

50 30 loooo m: 0 0 0 0 0

40 10000 liLh 0 0 0 0 0

50 loooo m: 0 0 0 0 0 Table 1 5 Saccharomyces cerevisiae ATCC 9763 CO

Number of survivors in erythritol solution

Table 1 6 Aspergillus nigar IFO 6342

Number of survivors in erythritol solution

¾m Anti-concentration Viable bacteria count (pieces / mL)

(° C) (% / w / w) 0 big 3 big 7 big 14 g 28 big B day 56

45 30 100001¾ ± 10000 liLh 10000 JiLh 10000 it 10000 JiU: 0

40 10000 JiU: 10000 iiLh 10000 HL 10000 liLh 0 0

50 10000 it 10000 JiLh 10000 HL 10000xt 0 0

50 30 10000 lil 0 0 0 0 0

40 10000 JiLh 10000 Ά ± 0 0 0 0

50 10000 HLt 10000xt 0 0 0 0

60 30 10000 JiLh 0 0 0 0 0

40 loooo yj: 0 0 0 0 0

50 loooo m: 0 0 0 0 0

60 10000 JiLh 0 0 0 0 0 Table 7 Aspergillus flavus IFO 6343

Number of survivors in erythritol solution

Table 8 Penicillium funiculosum IFO 6345

Number of survivors in erythritol solution

Example 2 (resistance to heat-resistant bacteria)

An erythritol solution was prepared so as to have a concentration of 30 to 70%, and the heat-resistant bacterium, Tills stearothermophilus IFO 12550, with a bacterial count of 10,000 cells / mL or more (Bacillus stearothermophilus) was used. Concentration). After inoculation, each solution was stored at 50, 60, and 75 ° C for 56 days, and the number of viable bacteria was measured daily. The viable cell count was measured in the same manner as in Example 1. Table 9 shows the results.

From the table, it was found that the growth of the thermostable bacteria was inhibited at a temperature of 50 ° C or higher at any concentration, and at 75 ° C, all the bacteria were killed after 14 hours.

As a result, it was found that if an erythritol solution having a concentration of 30% or more was placed in a container such as a tank lorry and kept at a temperature of 50 ° C or more, the heat-resistant bacteria could be stored or transported without growing. Table 9 Bacillus stearothermophilus IFO 12550

Number of survivors in erythritol solution

Example 3 (Long-term stability of erythritol solution by high-temperature storage)

Prepare solutions with erythritol concentrations of 50%, 55%, 58%, and 62%. The storage temperature of each was 55 ° C, 60 ° C, 65 ° C, and 75 ° C, and it was stored for 2 months, and the degree of deterioration was measured by measuring the degree of coloring, pH, and purity. The results are shown in Tables 10 to 13.

As a result, it was found that storage at a temperature of 55 to 65 ° C can be performed without a decrease in purity or coloring. In addition, for a short period of time within 10 days, even at 75 ° C, the change in pH was within 1 and the change in color degree was within 0.01, with no change in purity, and storage was possible without any problem. Table 1 10 Relationship between storage temperature and degree of coloring, pH and purity (%)

Storage temperature 75 ° C, erythritol concentration 6 2%

Table 1 1 1 Relationship between storage temperature, degree of coloring, pH and purity (%)

Storage temperature 65 ° C, erythritol concentration 58% Number of days Color degree pH Purity (50

0 0.029 5.7 100.0

10 0.030 5.5 99.9

30 0.029 5.2 100.0

60 0.036 4.7 99.9 Table 1 2 Relationship between storage temperature and degree of coloring, pH and purity (%) Storage temperature 60 ° C, erythritol concentration 55 5%

Table 1-3 Relationship between storage temperature, degree of coloration, pH, and purity (%)

Storage temperature 55 C, erythritol concentration 50%

Based on the above results, to increase the amount of storage or transport of erythritol, to suppress the precipitation of crystals from the erythritol solution, and to store or transport it in a stable state, the concentration should be 50% or more and the temperature should be Was maintained at 50 to 75 ° C, more preferably 55 to 65 ° C. Industrial applicability

In the present invention, erythritol can be made into a 30% or more concentrated solution from conventional crystal powder and stored or transported while keeping the temperature. For this reason, for large consumers of erythritol, there have been problems such as bag opening, dissolution time and a large amount of dissolution energy, and dissolution tanks with stirrers. Equipment costs can be reduced and environmental problems associated with disposal of empty bags can be resolved.

Claims

The scope of the claims

1. A method for storing or transporting an erythritol solution, which comprises maintaining the erythritol solution at a solid content of 30% or more and a temperature of 50 ° C or more so that erythritol crystals do not precipitate.

2. A method for storing or transporting an erythritol solution, wherein the erythritol solution is maintained at a solid concentration of 50 to 70% at a temperature of 50 to 75 ° C so that erythritol crystals do not precipitate.

3. A method for storing or transporting an erythritol solution, which comprises maintaining the erythritol solution at a solid concentration of 50 to 58% and a concentration of 55 to 65 ° C.

4. The method for transporting an erythritol solution according to any one of claims 1 to 3, wherein the method is transported using a tank truck.